@INPROCEEDINGS{Halpin99datamodeling,
    author = {Terry Halpin and Anthony Bloesch},
    title = {Data modeling in UML and ORM: a comparison},
    booktitle = {IDEA GROUP PUBLISHING COMPANY},
    year = {1999},
    pages = {4--13},
    publisher = {}
}

@inproceedings{tyszkiewicz2010spreadsheet,
  title={Spreadsheet as a relational database engine},
  author={Tyszkiewicz, Jerzy},
  booktitle={Proceedings of the 2010 ACM SIGMOD International Conference on Management of data},
  pages={195--206},
  year={2010},
  organization={ACM}
}

@MISC{Kim00aformal,
    author = {Soon-kyeong Kim and Soon-kyeong Kim and David Carrington and David Carrington},
    title = {A Formal Mapping between UML Models and ObjectZ Specifications},
    year = {2000}
}

@MISC{Jarrar_ormmarkup,
    author = {Mustafa Jarrar and Star Lab},
    title = {ORM Markup Language, version 3},
    year = {}
}

@Misc{googlesp,
  OPTkey = 	 {},
  OPTauthor = 	 {},
  title = 	 {Basics of Storing Data in Google Sheets},
  howpublished = {https://developers.google.com/apps-script/guides/sheets},
  OPTmonth = 	 {},
  OPTyear = 	 {},
  OPTnote = 	 {},
  OPTannote = 	 {}
}

@Misc{montali,
  OPTkey = 	 {},
  author = 	 {Marco Montali},
  title = 	 {Coceptual Modeling},
  howpublished = {http://www.inf.unibz.it/~montali/1213/cmis/slides/4.relational-mapping.pdf},
  OPTmonth = 	 {},
  year = 	 {2012-2013},
  note = 	 {Relational Mapping lecture},
  OPTannote = 	 {}
}


@article{rumbaugh1999unified,
  title={The unified modeling language reference manual},
  author={Rumbaugh, James and Jacobson, Ivar and Booch, Grady},
  year={1999},
  publisher={Addison-Wesley Professional}
}

@book{brodie1984conceptual,
  title={On conceptual modelling},
  author={Brodie, Michael L and Mylopoulos, John and Schmidt, Joachim W},
  year={1984},
  publisher={Springer-Verlag New York}
}
